Question

The speed of a car increases by 2kms after every one hour. If the distance travelled in the first one hour was 35kms, what was the total distance travelled in 12 hours? (In kms)

Answer 1

Answer:

35+(11)*2

=57km

Answer 2

Answer:

Step-by-step explanation:

Total distance travelled in 12 hours= (35+37+39....upto 12 terms).this is in an A.P .with 1st term a=35,no of terms =12,common diff d=2

So required distance n/2(2a+(n-1)×d)

12/2(2×35+(12-1)×2)=6(70+22)=552km